연화 거동을 갖는 콘크리트의 3차원 탄소성 해석

초록

In this study, a compressive failure model of a plain concrete having strain softening behavior is described through 3-dimensional finite element method. In this regards, a number of numerical models on the tensile failure have been developed so far, but experimental data on the strain softening behavior under compressive loading are relatively few. In the proposed model, a softening rule describing post-peak behavior is introduced via Drucker-Prager's yield criterion and 3-dimensional finite element program has been accordingly developed using elasto-plastic constitutive model. Results from the numerical analysis were compared with the experiment data available and good agreement has been achieved. In addition, specimen type, size effect and position of weak elements are considered and the post-peak behavior of the compressive failure mode is fully investigated.

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